EP3529109A1 - Verfahren zum auslösen einer mehrzahl von aktoren eines sicherheitssystems eines kraftfahrzeugs aus einer energiequelle - Google Patents
Verfahren zum auslösen einer mehrzahl von aktoren eines sicherheitssystems eines kraftfahrzeugs aus einer energiequelleInfo
- Publication number
- EP3529109A1 EP3529109A1 EP18714435.7A EP18714435A EP3529109A1 EP 3529109 A1 EP3529109 A1 EP 3529109A1 EP 18714435 A EP18714435 A EP 18714435A EP 3529109 A1 EP3529109 A1 EP 3529109A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- triggering
- actuators
- energy
- triggered
- time window
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
- B60R21/017—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including arrangements for providing electric power to safety arrangements or their actuating means, e.g. to pyrotechnic fuses or electro-mechanic valves
Definitions
- the invention relates to a method for triggering a plurality of actuators of a safety system of a motor vehicle from a power source according to the preamble of claim 1.
- the ignition means are ignited in the usual way from an energy source.
- an energy source for this purpose, in addition to a vehicle electrical system and also at least one autarky capacitor is provided, wherein the autarky capacitor (s) are charged from the electrical system, possibly also to a relation to the voltage value on the electrical system higher value.
- the ignition path runs via a central safing transistor, ignition circuit-specific high-side switches, the ignition means and ignition circuit-specific low-side switches back across the vehicle ground.
- the triggering time is decided by a crash detection algorithm.
- the number of controlled ignition means is not included in this decision. Accordingly, the circuit is designed to be able to trigger all the ignition means simultaneously.
- a method for triggering a passive occupant protection system for motor vehicles in which at least one electrical ignition means for a person in the event of a dangerous impact protective agent, in particular airbag, belt tensioner, for supplying ignition energy with a Triggering current is applied, which is generated in case of malfunction of the electrical system of the motor vehicle as a discharge current of a self-sufficiency capacitor.
- This autarkic capacitor thereby simultaneously provides the triggering currents for a plurality of ignition means, the triggering current of each ignition means being pulse-width modulated such that the ignition energy required for the respective ignition means is set via the pulse-pause ratio of the triggering current.
- DE 19917340 C1 describes a device for triggering occupant protection means of a motor vehicle having a plurality of ignition circuits and a control device for generating a triggering algorithm based on sensor signals and for controlling based on the triggering algorithm and an energy storage for supplying the ignition circuits with energy, in which by the energy storage only energy is provided for a part of the ignition circuits and the energy per ignition circuit is dependent on given priorities, if the energy reserve is not sufficient for all ignition circuits to be ignited.
- a method is already known from WO 2015/17581 A1, where a maximum group size of actuators for triggering within a time window is predetermined independently of the question of a possible destruction of the electrical system and individual, at least partially different maximum group sizes are predefined for successive time windows and the maximum group size for the respective time window is determined adaptively on the basis of the actuators actually already triggered in previous time windows.
- the actuators are triggered according to their priority and the triggering of a number of actuators that exceeds the current, adaptively adjusted maximum group size is shifted to subsequent time windows.
- the group size or the circuit design must be based on the worst case. This is the last required time at Autarkie practitioner (at battery break), since here before the release of the energy reserve is already partially discharged by circuit operation as well as previous release of groups.
- the adaptation of the maximum group size is therefore only a rough grid for adjusting the triggering and must continue to be designed components of the circuit to the largest possible maximum group size.
- the object of the present invention is therefore to further optimize the triggering. This object is solved by the features of the independent claims. Advantageous developments of the invention will become apparent from the dependent claims, and combinations and developments of individual features are conceivable with each other.
- An essential idea of the invention is that in the case of destruction of the vehicle electrical system for each remaining Auslosezeiten each currently actually (still) available amount of energy is measured or estimated in at least one Autarkiekondensator. On the basis of this amount of energy, it is checked whether all actuators provided for triggering in this particular remaining release time window can be triggered. If so, they will be triggered of course. In contrast to a fixed maximum group size, an adaptation to the maximum available amount of energy can be triggered, ie. the amount of energy is used optimally.
- those actuators are selected based on a predetermined rule from the actually in this Auslosezeitpper for triggering in this intended actuators, which can actually be triggered in this particular remaining Auslosezeiten with the currently available in this Auslosezeit00 amount of energy.
- DE 19917340 C1 also uses such a priority rule, the triggering for the remaining actuators is definitively prevented there. In the present method, however, the release of the remaining actuators intended to be triggered in this release slot is moved to the following release window (s), i. usually only slightly delayed yet triggered.
- the steps are repeated for all remaining pause time windows. In a particularly preferred embodiment, however, only if the amount of energy currently available then is no longer sufficient to trigger at least one actuator.
- the currently available amount of energy is determined by measuring the voltage across the at least one autarky capacitor. This preferably takes place cyclically, for example immediately before the respective release time window. This has the advantage that neither the time since destruction of the electrical system nor the already ignited actuators must be considered. In another embodiment, however, the measurement should be avoided, but the currently available amount of energy can at least be estimated by the time since the destruction of the on-board network is detected by means of a timing and to which an available reduced amount of energy is assigned.
- At least one discharge characteristic is specified for the actuators triggered since the destruction of the vehicle electrical system, but individually corresponding discharge curves can also be predetermined for groups or each of the actuators. Since currently the actuators but usually have a normalized energy intake, a simple count this can be done and closed from the number since the destruction of the electrical system already ignited actuators on the remaining amount of energy.
- a control device for a safety system for triggering a plurality of actuators is provided with means for carrying out the corresponding method, in particular with a memory having a corresponding algorithm for execution on a microprocessor of the control device.
- Adaptive i. Measuring the capacitor voltage to estimate the amount of energy actually remaining, preferably at each release time window, i. preferably in each case before this.
- the triggering behavior under normal conditions is not influenced by the reduced performance during autonomous mode, while in self-sufficient mode by an energy-optimized group formation always the best tripping performance is selected at that time.
- Applications that only work to a limited extent under certain conditions can make the most of it with the knowledge of the available amount of energy.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Window Of Vehicle (AREA)
- Air Bags (AREA)
- Power-Operated Mechanisms For Wings (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102017207578.3A DE102017207578B4 (de) | 2017-05-05 | 2017-05-05 | Verfahren zum Auslösen einer Mehrzahl von Aktoren eines Sicherheitssystems eines Kraftfahrzeugs aus einer Energiequelle |
| PCT/DE2018/200024 WO2018202255A1 (de) | 2017-05-05 | 2018-03-12 | Verfahren zum auslösen einer mehrzahl von aktoren eines sicherheitssystems eines kraftfahrzeugs aus einer energiequelle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3529109A1 true EP3529109A1 (de) | 2019-08-28 |
| EP3529109B1 EP3529109B1 (de) | 2020-06-10 |
Family
ID=61832235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP18714435.7A Active EP3529109B1 (de) | 2017-05-05 | 2018-03-12 | Verfahren zum auslösen einer mehrzahl von aktoren eines sicherheitssystems eines kraftfahrzeugs aus einer energiequelle |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US11273781B2 (de) |
| EP (1) | EP3529109B1 (de) |
| CN (1) | CN110234544B (de) |
| DE (1) | DE102017207578B4 (de) |
| WO (1) | WO2018202255A1 (de) |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2138595Y (zh) * | 1992-08-03 | 1993-07-21 | 何顺禄 | 汽车驾驶员安全气囊装置 |
| US5432385A (en) * | 1993-03-18 | 1995-07-11 | Delco Electronics Corp. | Supplemental inflatable restraint energy management and deployment system |
| DE19507619A1 (de) * | 1995-03-04 | 1996-09-05 | Telefunken Microelectron | Schaltung zur Steuerung und Zündung von Insassen-Schutzvorrichtungen |
| DE19627877A1 (de) | 1996-07-11 | 1998-01-15 | Telefunken Microelectron | Verfahren zur Auslösung eines passiven Insassen-Schutzsystems für Kraftfahrzeuge |
| DE19752622C1 (de) | 1997-11-27 | 1999-09-16 | Siemens Ag | Kraftfahrzeug-Insassenschutzsystem mit mehreren Zündpillen, und Verfahren zum Ansteuern eines Zündkreises eines solchen Insassenschutzsystems |
| DE19917340C1 (de) | 1999-04-16 | 2000-07-27 | Siemens Ag | Vorrichtung zum Auslösen von Insassenschutzmitteln eines Kraftfahrzeugs |
| EP1554162B2 (de) * | 2002-10-21 | 2014-03-26 | Autoliv Development Ab | Verbesserungen für eine sicherheitsanordnung für ein fahrzeug oder diese betreffend |
| DE10255429A1 (de) * | 2002-11-28 | 2004-06-09 | Conti Temic Microelectronic Gmbh | Verfahren zum Betreiben einer aus einer Betriebsspannungsquelle versorgten elektronischen Baugruppe |
| EP1625046B1 (de) * | 2003-05-12 | 2010-12-08 | Johnson Controls GmbH | Vorrichtung für einen verstellmechanismus, verstellmechanismus und verfahren |
| DE102004010135B4 (de) * | 2004-02-27 | 2013-11-07 | Robert Bosch Gmbh | Vorrichtung zur Bestromung wenigstens einer Zündendstufe mittels eines Zündstroms aus einer Energiereserve |
| US7644799B2 (en) * | 2005-02-10 | 2010-01-12 | Friedman Research Corporation | Vehicle safety control system |
| DE102007055123B4 (de) * | 2007-11-19 | 2020-06-18 | Robert Bosch Gmbh | Steuergerät und Verfahren zur Ansteuerung von Personenschutzmitteln für ein Fahrzeug |
| FR2938656B1 (fr) | 2008-11-18 | 2011-08-26 | Thales Sa | Systeme a securite intrinseque et module de test, notamment pour une utilisation dans un systeme de signalisation ferroviaire |
| DE102010001004A1 (de) | 2010-01-19 | 2011-07-21 | Robert Bosch GmbH, 70469 | Verfahren und Vorrichtung zur Ansteuerung von Aktuatoren |
| FR2956212B1 (fr) * | 2010-02-08 | 2012-03-09 | Schneider Electric Ind Sas | Dispositif et procede de comptage d'energie electrique |
| US8069663B2 (en) * | 2010-09-09 | 2011-12-06 | Ford Global Technologies, Llc | Method and system for turbocharging an engine |
| DE102014202193A1 (de) | 2014-02-06 | 2015-08-06 | Continental Automotive Gmbh | Verfahren zum Auslösen einer Mehrzahl von Aktoren eines Sicherheitssystems eines Kraftfahrzeugs |
| US9849852B1 (en) * | 2015-09-04 | 2017-12-26 | Waymo Llc | Intelligent deployment of safety mechanisms for autonomous vehicles |
-
2017
- 2017-05-05 DE DE102017207578.3A patent/DE102017207578B4/de not_active Expired - Fee Related
-
2018
- 2018-03-12 CN CN201880009418.5A patent/CN110234544B/zh not_active Expired - Fee Related
- 2018-03-12 WO PCT/DE2018/200024 patent/WO2018202255A1/de not_active Ceased
- 2018-03-12 EP EP18714435.7A patent/EP3529109B1/de active Active
-
2019
- 2019-10-28 US US16/666,100 patent/US11273781B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN110234544A (zh) | 2019-09-13 |
| EP3529109B1 (de) | 2020-06-10 |
| CN110234544B (zh) | 2022-06-03 |
| US20200062201A1 (en) | 2020-02-27 |
| DE102017207578A1 (de) | 2018-11-08 |
| WO2018202255A1 (de) | 2018-11-08 |
| DE102017207578B4 (de) | 2019-03-07 |
| US11273781B2 (en) | 2022-03-15 |
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